I was reading Iserson's guide to Residency and in the Derm section I read there are programs that only take those who have finished an IM residency - it seemed to indicate this was separate from those IM/derm programs. I was wondering if these programs do in fact exist and if anyone has any knowledge of such programs. On a similar note, has anyone here done an IM residency and then a Derm residency? Is it exceedingly rare or is it possible?